GEO416 has been developed to measure earth resistance with 2 wires, 3 wires and 4 wires by voltammetric method and ground resistivity. These values are extremely important while designing earth systems.

The 2-wire method, by taking advantage of appropriate external masses as a reference (metal surfaces, tubes, neutral conductor, etc.), is particularly useful in private environments where, because of logistic problems, it is not possible to use the 3-wire method. The device allows carrying out measurements with a wide measuring range (up to 50kOhm) with an efficient internal compensation of the disturbance effects found on the installations. GEO416 is provided with an internal memoryfor saving measurements and with an optical/USB interface for transferring measured data onto the PC

The HT Italia GEO416 is a innovative earth ground resistance tester designed to performing Earth Resistance measurements with 3-pole standards method typically in industrial electrical installations environments which consists of single probes and more or less wide earth networks. This meter can perform also 2-pole measure (where auxiliary metal parts are available) extremely important in civil environments where 3-pole method application is not possible for logistical reasons. The earth ground resistance tester GEO416 performs tests with a high measurement range (up to 50kOhm) with a test current at high frequency in order to consider and eliminate noise voltages disturb on installation. Earth Resistivity test measure with 4-wire method it’s also very useful on preliminary calculation of earth installation dimension. A contextual help selectable by user it’s available on meter for each functions. The model can save each test result inside memory and can transfer saved dates to PC through optical / USB interface with dedicated Windows software.

Features

2-pole Earth Resistance

3-pole Earth Resistance

4-pole Earth Resistivity

High measurement range (50kOhm)

Noise voltage measure

Automatic calibration of test cables resistance

Memory for saving tests

Backlight

Optical /USB PC interface

What’s In The Box

KITTERRNE : Set 4 cables + 4 metal probes

COC4-UK : Set of 4 alligator clips

BORSA2000N : Carrying bag for accessories

ISO9000 calibration certificate

User manual

Specifications

HT Instruments GEO 416 Specifications

Electrical Specifications

Accuracy in indicated as ± (% of reading + number of digits) at 23°C ± 5°C ; <60%HR

Earth Resistance 3-wire and 2-wire systems

Range (Ω)

Resolution (Ω)

Accuracy

0.01 ÷ 19.99

0.01

±(2.5%rdg + 2dgt)

20.0 ÷ 199.9

0.1

200 ÷ 1999

1

2.00 ÷ 19.99k

0.01k

20.0 ÷ 49.9k

0.1k

Test current:

≤12mAAC

Open circuit voltage:

≤25V ACTRMS

Test frequency:

77.5Hz ± 1Hz

Rprobes:

≤50kΩ

Earth Resistivity ρ with 4-wire method

Range (Ωm)

Resolution (Ωm)

Accuracy

0.06 ÷ 19.99

0.01

±(2.5%rdg + 2dgt)

20.0 ÷ 199.9

0.1

200 ÷ 1999

1

2.00 ÷ 19.99k

0.01k

20.0 ÷ 199.9k

0.1k

0.20 ÷ 3.15M

0.01M

Test current:

≤12mAAC

Open circuit voltage:

≤25V ACTRMS

Test frequency:

77.5Hz ± 1Hz

Probe distance range:

1÷10m

Rprobes:

≤50kΩ

Noise Voltages

Range (V)

Resolution (V)

Accuracy

460

1

±(2.0%rdg + 2dgt)

General Specifications

Display, Memory, Serial Interface:

Features:

Custom LCD with backlight

Visible area:

73×65 mm

Memory:

999 locations

Serial interface:

RS-232 /USB

Power Supply:

Batteries:

6 batteries 1.5V type LR6-AA-AM3-MN 1500

Low batteries indications:

battery symbol at display

Batteries life:

about 500 test

Mechanical Features:

Dimensions:

222 (W) x 162(L) x 57(D) mm

Weight (included batteries):

about 1kg

Working Environmental Conditions:

Reference temperature:

23°C ± 5°C

Working temperature:

0° ÷ 40°C

Allowed relative humidity:

<80%HR

Storage temperature:

-10 ÷ 60°C

Storage humidity:

<80%HR

General Reference Standards:

Safety of measuring instruments:

IEC / EN61010-1

Safety of accessories:

IEC / EN61010-031

Product type standard:

IEC / EN61557-1, IEC / EN61557-5

Insulation:

double insulation

Pollution degree:

2

Overvoltage category:

CAT III 240V to ground, 415V between inputs

Max altitude:

2000m

EMC:

EN61326-1(1998) + A1(1999)

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